/*
Simple Forum Auto Poster.
Copyright (C) 2011 Gianni Van Hoecke.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
package domain.net;

import java.net.URL;
import persistence.net.URLChecker;

/**
 *
 * @author Gianni Van Hoecke <gianni.vh@gmail.com>
 */
public class LinkChecker
{
    /**
     * Validates a link.
     * Ex.:
     *  - front  = "http://www.domain.org/site/page.php"
     *  - output = "/site/otherpage.php";
     *  - returns = "http://www.domain.org/site/otherpage.php".
     * @param front A full url.
     * @param output the end of a url.
     * @return The full url of output.
     */
    public static String checkString(String front, String output)
    {
        try
        {
            URL url;
            
            if(URLChecker.check(output, false))
                return output;

            url = new URL(front);
            return url.getProtocol() + "://" + url.getHost() + ":" + url.getPort() + output;
        }
        catch(Exception e)
        {
            return output;
        }
    }
}